// JS浮点数运算Bug的解决办法  
// ACC（Accumulator）是累加器A缩写。

export function accAdd(arg1, arg2) {
  var r1, r2, m;
  try {
    r1 = arg1.toString().split(".")[1].length
  } catch (e) {
    r1 = 0
  }
  try {
    r2 = arg2.toString().split(".")[1].length
  } catch (e) {
    r2 = 0
  }
  m = Math.pow(10, Math.max(r1, r2))
  return (arg1 * m + arg2 * m) / m
}

export function accSub(arg1, arg2) {
  var r1, r2, m, n;
  try {
    r1 = arg1.toString().split(".")[1].length
  } catch (e) {
    r1 = 0
  }
  try {
    r2 = arg2.toString().split(".")[1].length
  } catch (e) {
    r2 = 0
  }
  m = Math.pow(10, Math.max(r1, r2));
  //动态控制精度长度
  n = (r1 >= r2) ? r1 : r2;
  return ((arg1 * m - arg2 * m) / m).toFixed(n);
}
